Identify the type of trash compactor you have. The two basic types are push-button and key-switch. The former has "ON/OFF" buttons on the front panel. The latter has a knob or dial that has "OFF," "On" and "START" positions.
Raise the compactor ram to the ready position. On push-button models, push the "OFF" button and then press the "ON" button. For key-switch models, turn the dial to "START" and release. The drawer remains locked until the ram is all the way up as a safety precaution.
Reset the compactor after the "Solid Cycle" is finished. Lift up on the foot pedal to reset the unit and unlock the drawer.